Here, I'll dive into some of the best upgrades for the M&P 15, highlighting their specifications, features, pros and cons, and my personal experiences with each.

Additionally, I'll include feedback from other users to give you a well-rounded view of these enhancements.

Top 6 Best Upgrades for M&P 15 in 2024

1. Geissele Super Semi-Automatic (SSA) Trigger

⁠

Specifications:

Type: 2-Stage Trigger

Pull Weight: 4.5 lbs (2.3 lbs first stage, 2.0 lbs second stage)

Material: S7 Tool Steel

Finish: Black Oxide

Best Features:

Smooth and precise pull

Consistent break

Enhanced control for accurate shooting

Pros:

Crisp and clean trigger pull

Easy installation

High durability and reliability

Cons:

Relatively high cost

Might be too light for some users' preferences

Experience: Upgrading to the Geissele SSA trigger was a game-changer for my M&P 15. The two-stage design provides a smooth, consistent pull that significantly improved my accuracy and shooting experience. The first stage is light and smooth, leading into a crisp and clean break in the second stage. Installation was straightforward, and the quality of the materials used is evident in its performance.

Customer Comments: Many users echo my sentiments, praising the Geissele SSA for its transformative impact on their shooting accuracy and control. Some noted that it took a bit of adjustment to get used to the lighter pull but ultimately found it to be a worthwhile investment.

Why It Fits: The M&P 15 is a versatile rifle that can benefit immensely from a high-quality trigger upgrade. The Geissele SSA enhances precision and control, making it a perfect fit for those looking to improve their shooting performance.

2. Magpul MOE SL Stock

⁠

Specifications:

Material: Reinforced Polymer

Length of Pull: 10.9 - 14.1 inches

Weight: 9.6 oz

Features: QD Sling Mount, Anti-Slip Rubber Butt-Pad

Best Features:

Lightweight and durable construction

Comfortable cheek weld

Adjustable length of pull

Pros:

Improved ergonomics

Easy to install

Enhances overall rifle balance

Cons:

Slightly bulky for some users

Limited color options

Experience: The Magpul MOE SL Stock provided a significant improvement in comfort and handling. Its lightweight yet durable construction made it an excellent addition to my M&P 15. The adjustable length of pull allowed me to customize the fit to my body, and the anti-slip rubber butt-pad ensured a secure shoulder placement during shooting. The integrated QD sling mount is a nice touch for those who use slings.

Customer Comments: Online reviews frequently highlight the Magpul MOE SL Stock's comfort and ease of installation. Many users appreciate the improved cheek weld and overall feel of the rifle after installing this stock. Some, however, mentioned that it felt a bit bulky for their preferences.

Why It Fits: The M&P 15's modular nature means that comfort and ergonomics can be easily enhanced. The Magpul MOE SL Stock provides a reliable and comfortable upgrade that improves handling and shooting experience, making it a great match for the rifle.

3. Vortex Strike Eagle 1-6x24 Scope

⁠

Specifications:

Magnification: 1-6x

Objective Lens Diameter: 24 mm

Eye Relief: 3.5 inches

Field of View: 116.5-19.2 feet/100 yards

Weight: 18.5 oz

Best Features:

Versatile magnification range

Clear and bright optics

Fast focus eyepiece

Pros:

Excellent value for money

Durable construction

Easy to use and adjust

Cons:

Heavier than some other scopes

Eye relief could be better

Experience: The Vortex Strike Eagle 1-6x24 scope is a versatile optic that served me well on my M&P 15. Its broad magnification range is perfect for both close-quarters and mid-range shooting. The optics are clear and bright, and the fast-focus eyepiece allows for quick target acquisition. While it adds some weight to the rifle, the benefits of improved accuracy and versatility far outweigh this minor drawback.

Customer Comments: Many users praise the Vortex Strike Eagle for its performance and value. It’s often highlighted as one of the best scopes for the price, with many satisfied with its clarity and durability. Some users mentioned the eye relief as a minor issue but still found it to be an excellent addition to their rifles.

Why It Fits: The M&P 15 benefits from an optic that can handle a variety of shooting scenarios. The Vortex Strike Eagle’s versatility and quality make it an ideal choice for those looking to enhance their accuracy and overall shooting experience.

4. BCM Gunfighter Mod 3 Grip

⁠

Specifications:

Material: High-Impact Polymer

Angle: Reduced Grip Angle

Texture: Aggressive Texturing

Features: Storage Compartment

Best Features:

Ergonomic design

Secure grip texture

Integrated storage compartment

Pros:

Improved grip comfort

Enhanced control during shooting

Durable and reliable

Cons:

Aggressive texture may be too rough for some

Storage compartment lid can be tricky to open

Experience: The BCM Gunfighter Mod 3 Grip significantly improved my handling of the M&P 15. The reduced grip angle and aggressive texture provided a comfortable and secure grip, enhancing control during shooting. The storage compartment is a handy feature, though the lid can be a bit finicky. Overall, this grip is a fantastic upgrade for those looking to improve their rifle's ergonomics.

Customer Comments: Users frequently commend the BCM Gunfighter Mod 3 Grip for its comfort and control. The aggressive texturing is appreciated by many, though some find it a bit too rough for their liking. The integrated storage compartment is also a popular feature, despite occasional issues with the lid.

Why It Fits: The M&P 15’s modular design allows for easy ergonomic improvements, and the BCM Gunfighter Mod 3 Grip is a perfect example of this. It enhances handling and control, making it an excellent addition for any M&P 15 owner.